1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Assistant module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "openpagesswitcher.h"
#include "centralwidget.h"
#include "openpagesmodel.h"
#include "openpageswidget.h"
#include "tracer.h"
#include <QtCore/QEvent>
#include <QtGui/QKeyEvent>
#include <QtGui/QVBoxLayout>
QT_BEGIN_NAMESPACE
const int gWidth = 300;
const int gHeight = 200;
OpenPagesSwitcher::OpenPagesSwitcher(OpenPagesModel *model)
: QFrame(0, Qt::Popup)
, m_openPagesModel(model)
{
TRACE_OBJ
resize(gWidth, gHeight);
m_openPagesWidget = new OpenPagesWidget(m_openPagesModel);
// We disable the frame on this list view and use a QFrame around it instead.
// This improves the look with QGTKStyle.
#ifndef Q_WS_MAC
setFrameStyle(m_openPagesWidget->frameStyle());
#endif
m_openPagesWidget->setFrameStyle(QFrame::NoFrame);
m_openPagesWidget->allowContextMenu(false);
m_openPagesWidget->installEventFilter(this);
QVBoxLayout *layout = new QVBoxLayout(this);
layout->setMargin(0);
layout->addWidget(m_openPagesWidget);
connect(m_openPagesWidget, SIGNAL(closePage(QModelIndex)), this,
SIGNAL(closePage(QModelIndex)));
connect(m_openPagesWidget, SIGNAL(setCurrentPage(QModelIndex)), this,
SIGNAL(setCurrentPage(QModelIndex)));
}
OpenPagesSwitcher::~OpenPagesSwitcher()
{
TRACE_OBJ
}
void OpenPagesSwitcher::gotoNextPage()
{
TRACE_OBJ
selectPageUpDown(1);
}
void OpenPagesSwitcher::gotoPreviousPage()
{
TRACE_OBJ
selectPageUpDown(-1);
}
void OpenPagesSwitcher::selectAndHide()
{
TRACE_OBJ
setVisible(false);
emit setCurrentPage(m_openPagesWidget->currentIndex());
}
void OpenPagesSwitcher::selectCurrentPage()
{
TRACE_OBJ
m_openPagesWidget->selectCurrentPage();
}
void OpenPagesSwitcher::setVisible(bool visible)
{
TRACE_OBJ
QWidget::setVisible(visible);
if (visible)
setFocus();
}
void OpenPagesSwitcher::focusInEvent(QFocusEvent *event)
{
TRACE_OBJ
Q_UNUSED(event)
m_openPagesWidget->setFocus();
}
bool OpenPagesSwitcher::eventFilter(QObject *object, QEvent *event)
{
TRACE_OBJ
if (object == m_openPagesWidget) {
if (event->type() == QEvent::KeyPress) {
QKeyEvent *ke = static_cast<QKeyEvent*>(event);
if (ke->key() == Qt::Key_Escape) {
setVisible(false);
return true;
}
const int key = ke->key();
if (key == Qt::Key_Return || key == Qt::Key_Enter || key == Qt::Key_Space) {
emit setCurrentPage(m_openPagesWidget->currentIndex());
return true;
}
Qt::KeyboardModifier modifier = Qt::ControlModifier;
#ifdef Q_WS_MAC
modifier = Qt::AltModifier;
#endif
if (key == Qt::Key_Backtab
&& (ke->modifiers() == (modifier | Qt::ShiftModifier)))
gotoPreviousPage();
else if (key == Qt::Key_Tab && (ke->modifiers() == modifier))
gotoNextPage();
} else if (event->type() == QEvent::KeyRelease) {
QKeyEvent *ke = static_cast<QKeyEvent*>(event);
if (ke->modifiers() == 0
/*HACK this is to overcome some event inconsistencies between platforms*/
|| (ke->modifiers() == Qt::AltModifier
&& (ke->key() == Qt::Key_Alt || ke->key() == -1))) {
selectAndHide();
}
}
}
return QWidget::eventFilter(object, event);
}
void OpenPagesSwitcher::selectPageUpDown(int summand)
{
TRACE_OBJ
const int pageCount = m_openPagesModel->rowCount();
if (pageCount < 2)
return;
const QModelIndexList &list = m_openPagesWidget->selectionModel()->selectedIndexes();
if (list.isEmpty())
return;
QModelIndex index = list.first();
if (!index.isValid())
return;
index = m_openPagesModel->index((index.row() + summand + pageCount) % pageCount, 0);
if (index.isValid()) {
m_openPagesWidget->setCurrentIndex(index);
m_openPagesWidget->scrollTo(index, QAbstractItemView::PositionAtCenter);
}
}
QT_END_NAMESPACE
|
